With their main rivals from Muscle Milk Pickett Racing sidelined midway through with an overheating issue, Rebellion Racing claimed its second consecutive victory at the Petit Le Mans this evening at Road Atlanta, bringing the American Le Mans Series era to a close.

“In some sense, it’s frustrating because [us and Muscle Milk] had a good race going,” Prost told Fox Sports. “I mean, I think it would’ve been really tight. But in the end, you’re happy to win and we’re happy to have back-to-back [Petit] wins in the final race of the ALMS. It’s fantastic.”

In P2, the class win from the No. 551 Level 5 team enabled Tucker to claim the 2013 P2 driver’s championship. Tucker, Franchitti and Briscoe bested the No. 01 Extreme Speed Motorsports machine of Scott Sharp, Anthony Lazzaro and David Brabham for top honors.

“These guys are the best,” Tucker said of his teammates Franchitti and Briscoe. “They did a great performance today. I couldn’t be more proud of the whole team. The [Extreme Speed Motorsports] guys put on a hell of a fight for us, and we’re lucky that we got here. But these guys did a great job.”

The narrow battle in GT went to the No. 17 Falken Tire Porsche squad of Nick Tandy, Bryan Sellers, and Wolf Henzler. Shortly after a restart with 11 laps to go, Tandy had a brief off-course excursion at the downhill esses while leading the race but was still able to keep the point over the No. 56 BMW Team RLL entry of Dirk Muller.

After that heart-stopping moment, Tandy settled down and hung on by .74 of a second over Muller, who also fell short in the GT driver’s championship as the No. 3 Corvette Racing duo of Jan Magnussen and Antonio Garcia claimed that crown with a sixth-place finish alongside Jordan Taylor.

“I couldn’t have wished for a better year to do it – the last year of the ALMS,” Magnussen said. “Who would’ve thought after Sebring [retirement due to gearbox problems] that we’d be here celebrating a championship…It just couldn’t be better.”

The No. 8 BAR1 Motorsports trio of Chris Cumming, Kyle Marcelli and Stefan Johansson were triumphant in Prototype Challenge for its third consecutive ALMS victory.

Even better for BAR1, Cumming was able to overtake PC points leader Mike Gausch and win the driver’s championship in that class. Or so we thought.

As it was later revealed, the second-place car in the PC class – the No. 25 8Star Motorsports entry of Ozz Negri and Sean Rayhall – was not a full-season entry and thus, they do not receive points and the teams behind them move up.

That meant Gausch, who had finished fifth, received a fourth-place points finish, enabling him to claim the driver’s championship by one point over Cumming.